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Abstract functions in Swift Language
I'd like to create an abstract function in swift language. Is it possible?
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Java: Class.this
I have a Java program that looks like this.
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What does $$ mean in the shell?
I once read that one way to obtain a unique filename in a shell for temp files was to use a double dollar sign ( $$ ). This does produce a number that varies from time to time... but if you call it repeatedly, it returns the same number. (The solution is to just use the time.)
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Does “untyped” also mean “dynamically typed” in the academic CS world?
I'm reading a slide deck that states "JavaScript is untyped." This contradicted what I thought to be true so I started digging to try and learn more.
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HTTP vs HTTPS performance
Are there any major differences in performance between http and https? I seem to recall reading that HTTPS can be a fifth as fast as HTTP. Is this valid with the current generation webservers/browsers? If so, are there any whitepapers to support it?
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How do I revert a Git repository to a previous commit?
How do I revert from my current state to a snapshot made on a certain commit?
41 Answers
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Use cases for the 'setdefault' dict method
The addition of collections.defaultdict in Python 2.5 greatly reduced the need for dict 's setdefault method. This question is for our collective education:
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How serious is this new ASP.NET security vulnerability and how can I workaround it?
I've just read on the net about a newly discovered security vulnerability in ASP.NET. You can read the details here.
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Are there any O(1/n) algorithms?
Are there any O(1/n) algorithms?
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How to evaluate a math expression given in string form?
I'm trying to write a Java routine to evaluate math expressions from String values like:
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